- Production Manager
- Assistant Professor - Controlled Environments Entomologist
- Technical Development Specialist | Horticulture | France
- Director of Business Development | Middle East | Agtech
- Farm/Production Manager; Berlin (m/w/d)
- Trader Asian Market
- Avocado Growing Manager - Kenya
- Operations Accountant
- Sales Manager for Nordic countries (H/F)
- Senior Breeder
Top 5 -yesterday
- What is the status of tomato brown rugose fruit virus in Europe?
- “Our ToBRFV-resistant variety has been preferred by our producers in wide areas since 2020"
- 2022 Year Overview: 10 stories on greenhouse expansion
- "Greek producers, who also purchase their plants from Spanish nurseries, have reported the same quality issue in strawberry plants as Spanish producers"
- New horticultural lighting technical requirements launched
Top 5 -last week
Top 5 -last month
- Zambia: "We produce 5,000 units of lettuce per week, per tunnel, year-round"
- UK growers stop planting and put nurseries on sale amidst energy crisis and labor shortage
- "You can't grow on water without lights"
- "High-tech farmer AppHarvest is running out of money"
- German family company switches from tomato cultivation to hydroponic lettuce
"Integrated multiple approach necessary to stay ahead of Mycosphaerella in cucumbers"
Mycosphaerella likes high humidity and feels right at home in greenhouses. The fungus is a major threat to cucumber, especially since only a limited number of fungicides have sufficient effect. Rocket is one of the mildew agents that also works well on this fungus. In addition to research on (new) mildew agents, products are also screened for Mycosphaerella.
Relying on chemical control alone provides insufficient protection in the long term, says researcher Jantineke Hofland. "Mycosphaerella affects cucumber plants in different ways. Depending on the part of the plant, we see different symptoms."
Leaf Infection is recognizable by the yellow dots on the leaves, followed by a characteristic V-shaped pattern along the margins. Stem Infection generally occurs at the base of the plant, where there are black, spores-containing spots. The third symptom is fruit rot, with a prominent constriction at the end of the fruit.
System approach needed
Wageningen UR is pursuing a multi-faceted approach, based on increased resilience of the plant, the use of natural antagonists, climate control, and - as a last resort - corrective measures that prevent the germination of spores.
Hofland: "We are working on several projects. For a good preventive effect against fungi, it is important that an agent reaches the flower prematurely. Together with LTO Glaskracht Nederland and suppliers of pollinators, we want to do research on biological antagonists.
"We have already developed test kits to record the effect on the plant," adds Hofland. "This can be done by measuring concentrations of salicylic acid and jasmonic acid in the plant. Either way, an integrated approach is necessary to stay ahead of Mycosphaerella.”
Source: Certis Magazine Glashelder.
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Other news in this sector:
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